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1. CAS RN: 97240-79-4
2. Structural Formula:
3. Molecular formula & Molecular weight: C12H21NO8S 339.37
4. Appearance: It¡¯s a white to off-white powder. Freely soluble in dichloromethane
5. Quality Standard: USP32, purity ¡Ý 98.0%
Identification Infrared Absorption
The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation , as obtained in the Assay
Specific rotation Between -28.6¡ã and -35.0¡ã,measured at 20¡ã
Water Not more than 0.5%
Residue on Ignition Not more than 0.1%
Heavy metals Not more than 10ppm
Related compounds by HPLC
(Test 1) Fructose not more than 0.3%
Compound A not more than 0.3%
Other individual impurity not more than 0.1%
Total impurities not more than 0.5%
Limit of sulfamate and sulfate Sulfamate ion not more than 0.10%;
Sulfate ion not more than 0.10%.
Assay Topiramate contains not less than 98.0% and not more than the equivalent of 102.0% of C12H21NO8S, calculated with reference to the Anhydrous Basis.
6. Usage: It¡¯s a new drug of anticonvulsants.
7. Storage: It stored in sealed containers, cool and dry place, and away from light.
8. Packing: Paper bucket, 25kg/package.
9. HS CODE: 2932 9990.90
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| Company: |
Shaanxi Dasheng Pharmaceutical Tech Co., Ltd.
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| Contact: |
Ms. Beatrice Shi |
| Address: |
9F of Jiezuo Square, No.2 South Fenghui Rd., Hi-tech Industrial Developing Zone |
| Postcode: |
710075 |
| Tel: |
86-29-88193552 |
| Fax: |
86-29-88193353 |
| E-mail: |
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